Ferroic twin domains in metal halide perovskites

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MRS Advances © 2019 Materials Research Society DOI: 10.1557/adv.2019.358

Ferroic twin domains in metal halide perovskites Yongtao Liu1,2, Alex Belianinov1, Liam Collins1, Roger Proksch3, Anton V. Ievlev1, Bin Hu2, Sergei V. Kalinin1, Olga S. Ovchinnikova1* 1Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States

Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, United States

2

Asylum Research, An Oxford Instruments Company, Santa Barbara, California 93117, United States

3

* Author to whom correspondence should be addressed. Olga S. Ovchinnikova Center for Nanophase Materials Sciences, Oak Ridge National Laboratory 1 Bethel Valley Rd Oak Ridge TN, 37831-6493 [email protected].

Notice: This manuscript has been authored by UT-Battelle, LLC, under Contract No. DE-AC0500OR22725 with the U.S. Department of Energy. The publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for the United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

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ABSTRACT

An emerging family of materials—metal halide perovskites (MHPs)—have made incredible achievements in optoelectronics in the past decade. Owing to its potential role in optoelectronic properties, the ferroic state of MHPs has been investigated by lots of researchers. Here, we review the literature regarding investigations into possible ferroic behaviors in MHPs. We summarize the recent discoveries of ferroic twin domains in MHPs. We examine the ferroelasticity and the ferroelectricity of these twin domains. Several properties relevant to the twin domains are critically analyzed, including crystallographic structure, mechanical variation, chemical variation, etc. Finally, we discussed the effects of these domains on materials’ optoelectronic properties and their potential roles in photovoltaic action.

Downloaded from https://www.cambridge.org/core. Rice University, on 12 Oct 2019 at 12:05:30, subject to the Cambridge Core terms of use, available at https://www.cambridge.org/core/terms. https://doi.org/10.1557/adv.2019.358

INTRODUCTION Metal halide perovskites (MHPs) have attracted broad research interest due to their outstanding optoelectronics performance in applications such as photovoltaics,1-5 light-emitting diode,6,7 photodetectors,8 and spintronics.9,10 In particular, the power conversion efficiency (PCE) of MHPs based solar cells have reached 25.2 % within a